Question

A multicylinder gasoline engine in an airplane operates at 2500 revolutions per minute. Each revolution it takes in 7.89 x 10³ J and exhausts 4.58 x 10³ J.
(a) How many liters of fuel does it consume in 1.0 hour of operation if the heat of combustion of the fuel is 4.03 x 10⁷ J/L?
(b) What is the mechanical power output of the engine?
(c) What power does the exhaust system transfer out of the engine?

Answer 1

a. 1.18 * 10⁹ j/l

b. 185 Hp

c. 1.91 * 10⁵ W

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